Quick Answer. Depending on the species, catfish can live from eight to 20 years though the Mekong giant catfish lives more than 60 years. Almost 3,000 species of catfish have been catalogued throughout the world, but it is thought that as many as 4,500 exist. The Mekong giant catfish is the largest species of catfish.
Collagen, a protein, supports and your body's tissues and, literally, keeps your body from falling apart. Collagen is the primary component of the body's connective tissue. About 80% of the dermis -- the part of your skin that's under the epidermis (outer layer) -- is collagen.Collagen gives your skin strength.ollagen and elastin are fibers that make up the supporting structure of the skin. Collagen gives skin its firmness while elastin keeps skin tight. Both of these fibers are plentiful in young skin and start to break down with natural aging and as a result of sun exposure.
The Causes And Effects Of Collagen Loss By NewBeauty Staff | July 12, 2010 Collagen is a tough, almost rubbery protein that's created by cells called fibroblasts. Packed together as bundles, fibrous bands of collagen serve as the main support system of the dermis, the deepest layer of skin. Collagen gives skin its strength, and it makes skin firm and flexible with the help of elastin. Collagen is essential for young-looking skin because it gives structure to its cells. When collagen levels becomes depleted, the skin has little internal support, causing it to sag and contributing to wrinkles. Furthermore, when there is ample collagen in the skin, it's strong and more resistant to the effects of weight gain, so a lack of it can lead to a greater risk of stretch marks. Around age 35, collagen production naturally begins to taper off, and the quality of the collagen diminishes.